baber/WOPTO huggingface dataset:
Patent GB-1419729-A (GB)
Title: Electrical capacitors
IPC: H01G4/008
Filed: 1974-07-08
Abstract: 1419729 Capacitors SPRAGUE ELECTRIC CO 8 July 1974 [6 July 1973] 30220/74 Heading H1M A capacitor comprises ceramic body 10 containing base metal electrode layers 12, 16 extending to end faces 15, 19 respectively of the body, a film of noble metal deposited on end faces 15, 19 so as to cover at least the exposed edges of the electrodes as shown at 13, 17 and conductive coatings 14, 18 bonded to the said end faces making electrical contact with the noble metal and thus with the electrodes. In manufacturing the capacitor, green ceramic and base metal electrode layers, e.g. Fe, Ni and/or Co are fired in a reducing atmosphere to prevent oxidation of the base metal and the noble metal e.g. gold is applied preferably by immersion plating, or less selectively by electroless plating or sputtering. After application of silver paste coatings 14, 18, these are fired as in an oxidizing atmosphere which increases the resistance of the ceramic, the nobel metal preventing oxidation of the electrode edges which would lead to poor ohmic contact.
Patent GB-745190-A (GB)
Title: Process for the production of backed printing foils for offset printing machines
IPC: C25F3/04
Filed: 1953-11-02
Abstract: 745,190. Electrolytic etching. KLINKE, F. Nov. 2, 1953 [Nov. 11, 1952], No. 30235/53. Class 41. [Also in Group XVI] Planographic printing plates for use in offset printing-machines consist of a non-metallic support layer giving the mechanical strength to the plate and a thin metal foil, e.g. aluminium, applied thereto, the metal foil being roughened electrolytically on its surface. The roughening is effected with a heavy alternating current of low voltage in a bath of weak hydrochloric acid, e.g. about 1 per cent normal, to which metal salts may be added, especially chlorides of alkali metals, alkaline-earth metals or magnesium. After roughening, the foil may be rinsed and given a thin oxide layer by treatment with a dilute aqueous solution of ammonia. The printing-plate may be treated in the form of a continuous strip which is passed through the bath, or in the form of a stationary piece. In either case it may be located between fixed electrodes so as to act as a middle electrode.
Patent GB-1185853-A (GB)
Title: Detection System
Inventor: TALLEY ROBERT MORRELL
IPC: G08B13/183
Filed: 1967-06-30
Abstract: 1,185,853. Intruder alarm systems. HUGHES AIRCRAFT CO. 30 June, 1967, No. 30332/67. Heading G4N. [Also in Division G1] In an intruder detection system comprising a pulsed source of invisible radiation, the receiver is spaced from said source and is arranged to generate sawtooth waves, each wave being terminated by a pulse from said source and having means to detect sawtooth waves having excessive duration caused by the absence of one or more of said pulses. As shown, infra-red pulses of coherent or non-coherent radiation from a GaAs diode are passed via an infra-red filter 20 to a Si photo-diode 24 the output pulses from which are amplified at 26 and passed by a threshold circuit 28 (which removes background signals) to a sawtooth generator 30 providing a waveform shown in Fig. 10. Each sawtooth wave 32 is terminated at 34 by one of the received pulses, but in the presence of an intruder between the source and detector, the sawtooth output continues to rise as at 36 beyond the level of a further threshold gate 40, feeding a pulse to a generator 38 which operates a monitoring device. The transmitter (Fig. 6, not shown) comprises an oscillator repetitively charging a capacitor which is subsequently discharged into the GaAs diode. A common monitor may be employed with a plurality of such systems (Fig. 3, not shown). The infra-red radiation may be distributed around the monitored area by mirrors (Fig. 4, not shown). Fig. 1 (not shown) relates to the construction of transmitter and receiver in small housings having spikes for implanting the terrain. The housings may be installed at distances of 1000 feet by sighting along the edges of their housings or by use of alignment lights.
Patent GB-381742-A (GB)
Title: Improvements in moulds for casting ingots of steel
IPC: B22D9/00
Filed: 1931-11-02
Abstract: 381,742. Ingot moulds. KABUSHIKI KAISHA NIHON SEIKOSHO, 1, Ni-chome, Hon - cho, Nihonbashi - ku, Tokio. Nov. 2, 1931, No. 30358. Convention date, July 16. [Class 83 (i).] In casting steel ingots the mould A has a movable bottom B, supported on dry sand H or similar material, which, after the head C has been filled, is gradually lowered by allowing the sand to escape through a hole F of the required size. Steel is run from the ladle K fast enough to keep the level in the mould constant.
Patent GB-1478384-A (GB)
Title: Seed dispensing mechanism
IPC: A01C7/04
Filed: 1974-07-09
Abstract: 1478384 A seed dispensing mechanism for a mobile planter INTERNATIONAL HARVESTER CO 9 July 1974 [9 July 1973] 30387/74 Heading AID A seed dispensing mechanism 16 of a mobile planter 10 comprises a frame-work including a rotatable and cylindrical drum 80 having a plurality of apertures 101 and having one end in sealing engagement with a plate 55 and the other end being closed, a blower fan 66 which pressurises, with air, a hermetically sealed seed hopper 38 via a conduit 76 and the interior of the drum 80 via an opening 94 in the plate 55 so that seeds in the hopper 38, which is kept at a higher pressure than the drum 80, are directed into the drum 80 via a chute 98 and are held by the apertures 107 due to pressure difference between the drum interior and the ambient air and conveyed to a region of the rotating drum 80, which is its twelve o'clock position, so that rollers 104 close the apertures 107 and press the seeds into a seed manifold 103 to be conveyed to the ground via tubes 24, and a seed distributing means such as a levelling bar 130 which is disposed within the drum 80 to evenly spread the seeds along the apertures 101. The seed spreading can be promoted by a hood-like baffle 150 which projects from the plate 55 into the interior of the drum 80 and comprises a bottom wall (159) Fig. 7 (not shown) defining a tunnel structure one end of which is open and faces the air opening 94 while the other end is closed by a wall 160, an open side to direct air into the drum interior to pressurise it and a closed side having slots which direct air jets into the seed mass to spread the seeds evenly. The chute 98 has an adjustable extension 120 to determine the height within the drum 80 at which seeds will be maintained. An elongated brush 180 is disposed within the drum 80 and spans the various rows of depressions 100 to dislodge seeds from the @ertures 101.
Patent GB-743848-A (GB)
Title: Apparatus for indicating and localising leaks in gas-pressure protected electric cables
IPC: G01M3/18
Filed: 1952-12-01
Abstract: 743,848. Pressure gauges. TELEFONAKTIEBOLAGET L. M. ERICSSON. Dec. 1, 1952 [Dec. 1, 1951], No. 30413/52. Class 106 (2). [Also in Groups XXVIII and XXIX] A gauge for use in indicating and localizing a leak in a gas-pressure-protected cable comprises a pointer 7 provided with a contact 8 which at a fall of gas pressure engages a pin 9 secured to a ratchet wheel 1 rotatable counter-clockwise, as seen in Fig. 7, under the influence of a spiral spring 2 when released by the spring-loaded pawl 4 of a release arm 3 the shaft 5 of which is connected to an electrical relay armature 6. Operation of the relay armature 6 causes the shaft 5 and the arm 3 to turn so that a hook 15 of the arm engages midway between two teeth of the wheel 1, the pawl 4 being disengaged from the wheel which turns half a tooth pitch before being again engaged by the hook 15. After the fall in pressure has been registered in further apparatus the electric circuit between the terminals 10, 12 is broken and the relay armature 6 is pulled to the " off " position by a spring 16, the shaft 5 being turned so that the pawl 4 engages midway between two teeth of the wheel 1 and the hook 15 releasing the wheel so that the wheel turns half a tooth pitch and until the motion thereof is arrested by the pawl 4. The spring 2 is re-tensioned when the wheel 1 is rotated clockwise, as seen in Fig. 7, by a screwdriver inserted through a hole in the glass 17 and applied to the slot in the lock screw 18 of the ratchet-wheel shaft. In a modification, a relay R, Fig. 10, is energized to attract an armature 19 which causes, via links 22, 23, a pin 20 to turn an arm 24 about a shaft 25 so that a spring-loaded pawl 33 releases a ratchet wheel 37 which turns counterclockwise as seen in the Figure and under the influence of a spiral spring. Simultaneously, a spring-loaded pawl 34 also carried by the arm 24 engages midway between two teeth of the wheel 37, and links 26, 27 actuated by the arm 24 bend aside a spring 28, and a spring 29 previously supported by the link 22, and then presses the pin against a fixed support 30. On release of the armature the pin is disengaged from the support 30 and the pin is moved by the spring 29 against the spring 28 to point at the link 27 so that when the relay is again energized the pin will, via the links 26, 27, turn the arm 24 in a clockwise direction. The spiral spring is retensioned by manually pulling on a wire wound around a pulley fastened to the ratchet-wheel shaft.
Patent GB-1348211-A (GB)
Title: Composition for preparing electroconductive resins
IPC: C08F291/10
Filed: 1972-06-29
Abstract: 1348211 Electroconductive resins KANSAI PAINT CO Ltd 29 June 1972 [1 July 1971] 30430/72 Headings C3B and C3P A composition for preparing electroconductive resins comprises: (I) a polyepoxide and (II) one or more compounds of the following general formulae in which R<SP>1</SP> is H or Me, each of R<SP>2</SP> and R<SP>3</SP> is H or halogen, n<SP>1</SP> = 1-5, x = 1-3 and M<SP>1</SP> is H, Na, Li, K, Ag, Cu, Mg, Zn, Ba, Al, NH 4  or an amino radical; in which R<SP>4</SP> is H or Me, each of R<SP>5</SP> and R<SP>6</SP> is H or halogen, n<SP>2</SP> = 1-4 and each of M<SP>2</SP> and M<SP>3</SP> is H, Na, Li, K, Ag, NH 4  or an amino radical; in which R<SP>7</SP> is H or Me, each of R<SP>8</SP> and R<SP>9</SP> is H or halogen, n<SP>3</SP> = 1-4, x = 1-3 and M<SP>4</SP> is H, Na Li, K, Ag, Cu, Mg, Zn, Ba, Al, NH 4  or an amino radical. The composition may further comprise solvents, polymerization initiators and/or photosensitizers. The composition may comprise 75-15% by wt. of I and 25-85% by wt. of II. The composition may be coated on a substrate or placed on a layer of mercury and cured by exposure to light rays, heat rays, actinic rays or ionizing radiation.
Patent GB-488820-A (GB)
Title: Improvements relating to anti-icing devices for aircraft
IPC: B64D15/12
Filed: 1937-11-05
Abstract: 488,820. Electric heating of aircraft wings. PIDEAU, J. R., and DUCRET, A. M. Nov. 5, 1937, Nos. 30433, 30434, and 30435. Convention dates, Nov. 6, 1936, April 30, 1937, and Oct. 21, 1937. [Class 4] [Also in Group XI] Ice formation on parts of aircraft, such as the leading edge of the wings, is prevented by mounting thereupon a superficial electrically conductive covering from which heat is evolved by the passage of an electric current therethrough, in contact with the parts concerned or with a sheet of heat or electrical insulation thereon, the covering being exposed to the air. The electrically-conducting covering 1 may comprise a layer of a carbon or metal suspension in a suitable liquid, to which a small proportion of gum arabic or sodium silicate may be added, or a fine mesh wire cloth such as 100-250 mesh per sq. cm., or a very thin metal sheet such as produced by spraying metal, e.g. aluminium, nickel-chromium alloy, constantin, or tin, on the part to be protected. Suitable metal particles for the suspension comprise constantin, nickel, silver, nickel-chromium alloy, copper-manganese alloy, bismuth, &c., and suitable metal if wire cloth is used comprises nickel, " Monel Metal " (Registered Trade Mark), nickel-silver or nickel-chromium alloys. The layer of carbon suspension may vary in thickness, the thinnest part being preferably at the edge of the wing, and the thickest in the vicinity of the current leads 4. The de-icer may be constructed as a unit by mounting on detachable panels of metal, moulded materials &c. The parts to be protected are primarily heat insulated by means of a covering 5 of cork, felt, rubber, asbestos, fabric, cardboard, fibre &c., which may also serve as electrical insulation. For the latter, varnish, paint, paper &c., may additionally be used. Asbestos paper is preferred. Current is supplied to the conducting layer from a lead 4, constructed of braided metal strip, by means of strips 3 connected to a longitudinal strip 2 which contacts with the conducting layer ; the edge of the latter is preferably sandwiched between a pair of strips 2. The strips 2 and 3 may be composed of metallized paper such as asbestos paper strip sprayed with copper. In the use of wire cloth as the conducting layer, current is supplied from a lead 4 to flat conductors or braided strips welded on to the transverse ends of the cloth. The resistivity of the latter may vary according to variation in the profile of the wings. Specifications 471,175 and 471,244, [both in Group XI], are referred to.
Patent GB-695931-A (GB)
Title: Adustable support device for litters and the like
IPC: A61G1/06
Filed: 1951-12-31
Abstract: 695,931. Friction-grip fastenings. C. J. W. CORPORATION. Dec. 31, 1951 [April 13, 1951], No. 30434/51. Class 44 In the combination of a strap held taut between its ends and a support device strung on the strap, the support device comprises a frame, by which it is strung on the strap, two spaced strapgripping means carried by the frame to grip spaced portions of the strap, one of the means being arranged to grip the strap to hold the device against movement in one direction only along the strap, the other of the means being oppositely arranged to grip the strap to hold the device against movement in the other direction only along the strap, and means carried by the frame to hold a member in releasable confinement. In the arrangement shown, as applied to a device for supporting litters or stretchers, in which a strap 10 is connected between upper and lower anchor points 11 and 12 respectively, one end 16 of a pole of a litter is carried on the strap by a device 13, and the lower end of the strap is formed with an adjustable loop 22 which is held in releasable adjustment by the device 13 or by the lowermost device in the case of two or more devices being strung on the strap 10. Each device 13 consists of a frame comprising a pair of spaced plates formed with openings 30 and 31 giving access to lower and upper strap gripping means 26 and 27 respectively. The means 26, 27 comprise plate 33, spanning the spaced plates, and against which the main portion of the strap 10 and a strap end 39 are pressed by roughened cam portions 34 of levers 35 pivoted on cross pins 36. The pole end 16 is supported and retained in recesses 32 by a strap 41, one end of which is secured on a cross pin 43 and is then passed round the pole end 16 and is supported by a hook 46 on a cross-pin 47, the other end of the strap being releaseably secured between a further plate 33 and pivoted cam-lever 35, so that the strap 41 is automatically gripped upon release of manual pull on the end thereof. In an arrangement according to Fig. 2 (not shown), the strap gripping means act on spaced portions of the strap 10 and a loop secured to the device 13 slidably engages a stanchion to avoid swaying of the strap. In another arrangement, Figs. 4 and 5 (not shown) the pole end 16 is seated directly in the recess 32 and is prevented from dislodgment therefrom by an extension of the upper cam lever 35 which protrudes across the recess in the strap-engaging position of the lever. In another arrangement, Figs. 6 and 7 (not shown), the frame 25 is formed in two parts pivoted about a central roller and the recess for the pole end is formed by extensions of the frame plates which in the closed position of the frame halves, co-operate to form a circular opening for the pole end. The ends of the extensions may be overlapped or spaced, in the closed position.
Patent GB-227428-A (GB)
Title: An improved method of and apparatus for sealing cans in vacuo
IPC: B67B3/24
Filed: 1924-12-18
Abstract: 227,428. Thermoltept Corporation, (Assignees of Bach, N. P.). Jan. 12, 1924, [Convention date]. Hollow-ware to be sealed in vacuo, which whilst moving horizontally at a high speed, are spaced from one another by rotary mechanism 18, Fig. 2, supplied with covers stamped out by a machine 20 and loosely applied to the cans by a rotary device 22, Fig. 4. and transferred therefrom by a valve 13 into a vacuum chamber 14, have their progress temporarily interrupted by bringing them to a gradual stop, whereupon they are reciprocated vertically to permit of their being sealed, and are finally caused to resume their rate of horizontal travel at a rapidly accelerated pace so that they may be delivered from the vacuum chamber 14 by a valve 13<1>. A stand 10 supports a platform 17 along which cans are fed by a tortuous path to the device 22, the vacuum chamber 14, and platforms 11, 11<1> on which the valves 13, 13<1> are mounted, the valves being held on their seats by the difference of pressure Between their inner and outer sides. The device 22 comprises chambers 27 from which the cans are transferred singly to chambers 26 in the valve 13. The valve 13 rotates bringing each chamber 26 opposite the vacuum chamber 14 whereupon a finger 30 controlled bv a stationarv cam above the valve 13 ejects the can from the chamber 26 on to a sealing-table 35 where a finger 33 places it beneath a roller seaming or other sealing mechanism. The finger 33 is carried by a band 38 mounted on an eccentric 36 on a driving-shaft 37 and secured bv an arm 39 to a roller 42 adapted to move in a guide 41, the arrangement causing the finger to trace out an elliptical path. To raise and lower the table 35 to and from the sealing head, its support is secured to one end of a member pivoted at its other end to a fixed frame and provided intermediately with a groove which is engaged by rollers 52 on the shaft 37 as the shaft rotates. The sealed can is thrust off the table 35 into a chamber 45 of the valve 13<1> by a finger 44 mounted and operating similarly to the finger 33 and the valve 13<1>, which operates similarly to the valve 13, removes the can from the vacuum chamber.
Patent GB-266809-A (GB)
Title: Improvements in and relating to the manufacture of hydrocarbons and cyanides
IPC: C10B49/14
Filed: 1925-12-02
Abstract: 266,809. Clancy, J. C. Dec. 2, 1925. Coking processes.-The destructive distillation of carbonaceous substances such as carbohydrates, sawdust, bitumen, peat, lignite, shale and coal is effected by heating them in a bath of molten alkali cyanide. The carbonaceous material, such as coal, may be mixed with a liquid hydrocarbon such as petroleum, shale oil, or heavy tar oil, heated, and introduced below the surface of the liquid cyanide. The moisture of the coal produces ammonia from the cyanide, and this is in part decomposed and tends to hydrogenate the coal and increase, the yield of hydrocarbons. Dry ammonia may be bubbled through the reaction mixture to effect agitation and form more cyanide; and hydrocarbon gases from the products of distillation may be introduced with the ammonia. The introduction of the coal and oil mixture may be effected gradually, the reaction mixture being under pressure, for instance of 60 lb. per square inch, but the pressure is then gradually reduced and the distillation is effected preferably at about atmospheric pressure or in a vacuum. The temperature of the bath may be about 500‹ C. and may be raised to about 700‹ C. during the process. The cyanide formed is separated from the remaining carbon. In an alternative process, the coal may be mixed with solid cyanide and the mixture heated to liquefy the cyanide.
Patent GB-1192764-A (GB)
Title: Method of Logging Boreholes
Inventor: MANN FREDERICK HENRY
IPC: E21B47/06
Filed: 1967-07-03
Abstract: 1,192,764. Borehole logging. BRITISH PETROLEUM CO. Ltd. July 2, 1968 [July 3, 1967], No.30573/67. Heading GIN. In borehole logging, a variable being measured, e.g. pressure or temperature, causes corresponding positioning of the slider 11 of a potentiometer 10 and the effects of source voltage variations are reduced by adjusting the slider 16 of a second, preferably identical, potentiometer 15 connected in parallel with potentiometer 10 before lowering the apparatus down the borehole to give a zero output signal between the sliders at the expected value of the variable at a given location in the borehole and deducing the actual value of the variable at the given location from the output signal which represents the deviation from the expected value. The power source 14 and recorder 13 may be located down the borehole or on the surface.
Patent GB-618295-A (GB)
Title: A process for increasing the rate of polymerisation of diallyl phthalate
IPC: C08F18/08
Filed: 1946-10-14
Abstract: Diallyl phthalate is mixed with 5 to 38 mol. per cent of an unsubstituted alkyl methacrylate having 5 to 8 carbon atoms, the mixture being heated at a temperature of 50-200 DEG  C. to give an insoluble copolymer, no monomer being removed during an interruption of the process, the polymerization rate of the diallyl phthalate being considerably increased.  Methacrylates specified are methyl, ethyl, propyl, isopropyl, butyl, sec.-butyl, iso-butyl and tert. butyl methacrylates.  The temperature may be gradually or step wise increased, e.g. from 80 DEG  to 125 DEG  C. Specified catalysts which may be used are benzoyl, acetyl, lauryl, acetyl benzoyl, tert. butyl, di-tert. butyl and ketone peroxides. For comparison a copolymer of lauryl methacrylate and diallyl phthalate is prepared.  Fillers such as wood flour, alpha flock, sand, asbestos, mica, paper, cloth, cellulose, regenerated cellulose, cellulose esters and ethers, natural and synthetic fibres in continuous, shredded or comminuted form, pigments, dyes, dibutyl phthalate, synthetic and natural resins, gums, oils, wax and polyhalogenated aromatic compounds may be added before or during polymerization.  The liquid copolymer may be used in laminates for paper and/or fabrics, for impregnating cork, pottery, felts, electrical coils and netted fibres, and, with or without solvents, in bonding such as mica sheets, rubber sheets, silk, cellulose derivatives and in coating wires, porcelain, walls and concrete.
Patent GB-484607-A (GB)
Title: Improvements relating to hair brooms and the like
IPC: A47L13/44
Filed: 1936-11-10
Abstract: 484,607. Brushes. STAPLES, B. J. Nov. 10, 1936, No. 30615. [Class 19] A broom is provided with steel spring clips E for the temporary attachment of a duster D. The clips are eyeleted for attachment by screws C to the stock.
Patent GB-238761-A (GB)
Title: Improvements in cigarette-making machines
IPC: A24C5/28
Filed: 1924-12-20
Abstract: 238,761. Koerner, E. Dec. 20, 1924. Cigarette-making machines.-In cutting-mechanism for cigarette-making machines in which a rotating disc cutter 4 is mounted in a frame 1 on parallel cranks 2 the cutter shaft 3 is driven by bevel gearing 5, 6. The pinion 6 is fixedly mounted on a crank-pin 7 carried by an arm 9, the arm 9 being slidably mounted in a cranked bracket 14 rotating with a shaft 11. The arm 9 is adjustable in the bracket 14 to vary the radius of motion of the crank-pin 7.